Date: Sun, 8 Nov 1998 02:02:01 -0700 (MST) From: "Chad R. Larson" <chad@freeway.dcfinc.com> To: stable@FreeBSD.ORG Subject: Ultra SCSI Message-ID: <199811080902.CAA00299@freeway.dcfinc.com>
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Hi, gang. I'm building a new machine. It has an Intel RU440FX motherboard, with an embedded Ultra Fast/Wide SCSI controller built with the Adaptec 7880 chip set. It also has two Ultra Fast/Wide SCSI disk drives. Here's the output of a "grep ahc0 /var/run/dmesg.boot", after booting with the -v flag: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ahc0 <Adaptec aic7880 Ultra SCSI host adapter> rev 0 int a irq 11 on pci0:13:0 ahc0: Reading SEEPROM...checksum error ahc0: No SEEPROM available ahc0: Using left over BIOS settings ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs ahc0: Resetting Channel A ahc0: Downloading Sequencer Program...ahc0: 367 instructions downloaded ahc0: Probing channel A ahc0 waiting for scsi devices to settle ahc0: target 0 using 16Bit transfers ahc0: target 0 synchronous at 10.0MHz, offset = 0x8 ahc0: target 0 Tagged Queuing Device (ahc0:0:0): "IBM DORS-32160W WA6A" type 0 fixed SCSI 2 sd0(ahc0:0:0): Direct-Access 2063MB (4226725 512 byte sectors) sd0(ahc0:0:0): with 6703 cyls, 5 heads, and an average 126 sectors/track ahc0: target 1 using 16Bit transfers ahc0: target 1 synchronous at 10.0MHz, offset = 0x8 ahc0: target 1 Tagged Queuing Device (ahc0:1:0): "CONNER CFP2107E 2.14GB 1524" type 0 fixed SCSI 2 sd1(ahc0:1:0): Direct-Access 2048MB (4194304 512 byte sectors) sd1(ahc0:1:0): with 3999 cyls, 10 heads, and an average 104 sectors/track -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= First curiosity: "Using left over BIOS settings". What's that mean to an average boy? Then: "synchronous at 10.0MHz"..."using 16Bit transfers". I take that to mean we're getting 20 Megabytes/second at the interface. Pretty spiffy. But isn't Ultra SCSI supposed to clock at 20MHz? I want my MTV...er, I mean 40 Mbytes/sec. Just in case those leftover BIOS settings have anything to contribute, I set the BIOS to allow 40 Mb/s. No difference. Anyone wanna offer clues/advice? -crl -- Chad R. Larson (CRL22) Anasazi, Inc. 602-870-3330 chad@anasazi.com chad@rezsolutions.com chad@dcfinc.com 7500 North Dreamy Draw Drive, Suite 120, Phoenix, Az 85020 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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